根面成形术在牙冠延长手术中的应用

Application of root angioplasty in crown lengthening surgery

目的探讨根面成形术在牙冠延长手术中的应用效果。方法选择2013年1月至2015年12月在我院修复科就诊的符合要求的患者80例,根据手术方法的不同分成观察组和对照组,每组40例。观察组采用根面成形术和常规牙冠延长术,对照组仅行常规牙冠延长术。分别在术后第6周和修复后第3周进行复查,观察牙龈覆盖根面的情况,修复体边缘有无牙龈退缩和患者主观满意度。结果观察组平均覆盖率为91.3%,对照组平均覆盖率为55.3%,2组比较差异有统计学意义(P<0.05);观察组牙龈覆盖量为(3.1±1.3)mm,对照组牙龈覆盖量为(1.9±1.0)mm,2组比较差异有统计学意义(P<0.05)。结论根面成形术可以保证术区血供,减少损伤,但适应证范围小,影响因素多,临床上使用时要综合考虑。

Objective To analyze the application of root angioplasty in the crown lengthening surgery. Methods A total of 80 patients thai corresponding to criteria from January 2013 to December 2015 in repair outpatients of our hospital were selected and received retrospec- tive study, and they were randomly divided into the observation group and the control group according to different surgical methods with 40 cases in each group. The observation group was given root angioplasty and crown lengthening surgery, while the control group was only given crown lengthening surgery. Check-up was performed at 6 weeks postoperatively and 3 weeks after restoration, the condition of root surface covered by the gum,the condition of gingival recession of the restoration and the subjective satisfaction of the patients were observed. Results The average coverage of the observation group was 91.3 % , which was significantly more than 55.3 % of the control group （ P 〈 0.05 ）. The amount of the gum covering of the observation group was （ 3.1±1.3） ram, which was significantly larger than （ 1.9 ±1.0） mm of the control group（P 〈 0.05）. Conclusion Root angioplasty can guarantee blood supply,reduce tile damage,but the indication range is small,and it is influenced by many factors, and needs to incorporate the ideas of all sides when used in clinic.